<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>主页</title>
    <meta name="viewport" content="width=device-width,initial-scale=1,shrink-to-fit=no">
    <link rel="stylesheet" href="./command/bootstrap-4.4.1/css/bootstrap.min.css">
<!--    <link rel="stylesheet" href="./command/bootstrap-4.4.1/css/bootstrap-grid.css">-->
<!--    <link rel="stylesheet" href="./command/bootstrap-4.4.1/css/bootstrap-reboot.css">-->
    <script src="./command/jquery/jquery-3.4.1.min.js"></script>
    <script src="./command/bootstrap-4.4.1/js/bootstrap.min.js"></script>
    <script src="./command/bootstrap-4.4.1/js/bootstrap.bundle.min.js"></script>
</head>
<body>
    <div>
        <nav class="navbar navbar-default navbar-fixed-top" role="navigation">
            <div class="container-fluid">
                <div class="navbar-header">
                    <a class="navbar-brand" href="#">导航栏测试</a>
                </div>
                <div>
                    <ul class="nav navbar-nav">
                        <li class="active"><a href="#">11</a></li>
                        <li><a href="#">222</a></li>
                        <li class="dropdown">
                            <a href="#" class="dropdown-toggle" data-toggle="dropdown">
                                333 <b class="caret"></b>
                            </a>
                            <ul class="dropdown-menu">
                                <li><a href="#">1</a></li>
                                <li><a href="#">2</a></li>
                                <li><a href="#">3 3</a></li>
                                <li class="divider"></li>
                                <li><a href="#">4</a></li>
                                <li class="divider"></li>
                                <li><a href="#">5</a></li>
                            </ul>
                        </li>
                    </ul>
                </div>
            </div>
        </nav>
    </div>
</body>
</html>